Tissue
adventitia
ad·ven·ti·tia [ ad-ven-tish-ee-uh, -tish-uh ]
Subclass of:
Connective Tissue;
Blood Vessel
Etymology:
Latin adventitius = coming from outside (from ad = to + venire = to come)
Definitions related to adventitia:
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Organ component layer, each instance of which is the outermost connective tissue layer of some organ or organ part.Foundational Model of AnatomyUniversity of Washington, 2017
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The outermost covering of organs, blood vessels, and other such structures in the body.NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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(tunica adventitia) The outer connective tissue layer of the blood vessel wall. The adventitia consists of longitudinally arranged collagen fibers, elastic fibers, smooth muscle, fibroblasts, nerves and the vasa vasorum. It is thicker in veins than in arteries.NCI ThesaurusU.S. National Cancer Institute, 2021
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